Searching for a new Partner for Odoo update & integration

I am searching for a new partner that help us to transfer our odoo environment from Version 12 to 14. That means restructuring and establing additional features. We are searching for a long term partnership and bring in a dedicated Product Owner who is defining in a scrum setup continuously new features.
I expected a workload of 10 developer over a period of 3 month to lift the system to Version 14. After that I expecting a continuously pipeline amount of 2 developer.